Gearing.



H. M. BAKER, JR. GEARING.

APPLICATION FILED AUG. 21, 1908.

' Patented Dec. 7, 1909.

3 fiHIIETS-BHBET 1.

A TTOHNE Y8 H. M. BAKER, JR.

GEARING.

APPLICATION I'ILED AUG. 27, 1908.

Patented Dec. 7, 1909.

3 SHEETS-SHEET 3.

. nwavron fifiydenl ffiaflare/f ATTORNEYS as that appearing in i degreethls vlew FFTQ.

HAYDN MOZABIBAKEE, JRL, OF NEW YORK, N. Y.

GEARING.

Specification of Letters Patent.

Patented Dec. '7, 1..

Application filed August 27, 1908. Serial No. 450,439.

To all whom it. may concern:

Be it known that I, HAYDN J r.', a citizen of the United dent of thecity of New Brooklyn, in the county'of Kings and State of New York, haveinvented a new and Improved Gearing, of which the following is a full,clear, and exact description.

My invention relates to speed-controlled signaling mechanism, my moreparticular purpose being to provide a device in which a predeterminedspeed in a revoluble menu-- ber forces into or out of action a visualsignal so that a person may, by glancing at the signal, tell whether thespeed is above or below a predetermined critical point.

My invention further comprehendsa device in which a predetermined speedin a driving shaft actuatcs a governor and, through mechanismcontrollable by movements of this governor, affects the operativeconnections from a driving shaft to a driven shaft.

My invention further relates to means for adjusting the delicacy of themechanism just mentioned.

Reference is to be had to the accompany= ing drawings forming a part ofthis specification, in which similar characters of refer:

M. BAKER,

'ence indicate corresponding parts in all the figures.

Figure 1 is a fragmentary perspective showing my device as applied uponthe front end of'a car and used in such manner as to actuate a visualsignal whenever the speed of the car exceeds a-predetermined criticalfurther showing how a speedometer of ordinary construction may beconnected with the movable parts and driven thereby; Fig. 2 is anenlarged'vertioal section upon the line 2-2 of Fig l, and showing thecasing and a part of'the gearing employed in my improvedspeed-controlled mechanism. Fi 3 is a vertical section upon the line 3-3of *ig. 4, looking in the direction of the arrow and showing thegearing, a speed-controlled governor associated with the caring for thepurpose of rendering certain portions of the gearing idle or active,according to the degree of speed; Fig. 4 is a vertical section upon theline 4-4 of Fig. 3, looking in the direction of the arrow and showingsubstantially the same mechanism Fig. 3; Fig. 5 is an en larged sideelevation of the signal which is actuated by the speed-controlled mech-States, and a resi- York, borough of view partly in front elevation andpartly in section, showing substantially the same mechanism as thatappearing in Fig. 5; and Fig. 7 is accompanying parts for stoppin of aportionv of the gearing in or erto temporarily-change the action of thegearing, thereby operating the visual signal. A car is shown at 7 and isprovided with a track wheel 8 mounted upon an axle 9. This axle isprovided with a worm gear 10 which meshes with .a worm 11, the latterbeing mounted upon a revoluble shaft 12. The car carries abracket 13which supports a casing.14 inwhich are mounted several gear members andother parts hereinafter described.

Extending upwardly from the casing 14 is a tube 15 which leads to avisual signal 16 for indicating whether the car is runnin at or over apredetermined speed. A flexlble shaft 17 which derives its power fromthe shaft 12 is connected with a speedometer 7 which may be of ordinaryconstruction and is used for indicating the s eed of the car. The=casing14 is provided with heads 18, 19,

and revolubly supported by these heads and extending through the casin,'s.a shaft 20 provided with angular en enablin' it to be readilycoupled with other I revolnb e parts, as hereinafter described.

.A centrifugal governor 23, having the form of a disk, is mounted ulatter extendin diametrica ly through the shaft 20 aswil be understoodfrom Fig. 3. The disk is provided with slots 25 into w ich the. ends ofthe pin 24project slightly. A sleeve 26 encircles the shaft 20 and ispro vided with annular flanges 26. Connected with the sleeve "26 by aidof a pivot pin 2'Zv a detail showing a pawl and its rotation on a pin24, the

anism shown in Figs. 3 and 4; Fig. 6 is a s 21, 22 for is a link 28.This linkis connected with the governor 23 by aid of a pivot pin 29.

A fork 30 engages a sleeve 31 which is provided witha ange 31*, thisflange being 1nitegral with the sleeve 31. The fork 30 is supported by abracket 30*, the latter being mounted -u on a stub shaft 32 and adaptedto rock. onnectediwith this stubshaftis an arm 33 and a pawl 3 L thepurpose ofwhich is hereinafter explained. The

shaft 32 is supported upon a bracket 35, the latter being mountedrigidly upon the head 18. The bracket 35 is provided with a lug 36through which extends a threaded bolt 37.

Emir-"cling this threaded bolt and engaging the lug 36 is a locking nut38 for holding the threaded bolt rigidly in position. The bolt 37 servesas a limiting stop for the arm 33 and consequently prevents the pawl 34and the fork 30 from moving in excess of v predetermined limitscontrollable by adjustment of the bolt 37.

.A. worm 39 is mounted upon the shaft 20 and, of course, turnstherewith. Mounted upon the head 18 and projecting inwardly therefromare hangers 41, 42 which support a shaft 40. A worm gear 43 turns freelyupon the shaft and is connected rigidly:

with a bevel gear 44 preferably integral with it. Disposed adjacent tothe bevel gear 44 is another bevel gear 45 secured rigidly upon theshaft 40, as will be understood from Fig. 4. Intermediate the bevelgears 44, 45 is a hub 46 mounted loosely upon the shaft40. Radiatingfrom the hub 46 are two spokes 47 which support a rim 48. Two bevelgears 49, 50 mesh with the bevel gears 44, 45 and are'mounted upon stubshafts 51, 52 which radiate from the shaft 40 and are secured to the rim48. The stub shafts 51, 52 and the rim 48Vtogether constitute a type ofwheel. Mounted upon the outer surface of this wheel is a tooth 48 (seeFig. 3) so positioned that under proper conditions this tooth may engagethe outer or free end of the pawl 34, thereby stopping rotation of.

I "the rim 48.

A sleeve 53 (see Fig. 4) is provided with a flange 54 and is mountedupon -thecasing 14 so as to engage a reduced portion 55 of the hanger42. This sleeve is useful for facilit-atin the coupling of the shaft 40to other revo uble parts. A slide rod 56 works in afbearing 57 (see Fig.7) and is provided with a threaded portion 56. This slide rod isconnected by a pivot pin 58 with the pawl 34 and is raised and loweredby movements of this pawl. A spiral spring 59 encircles the slide rod 56and engages the bearing 57. Mounted upon the threaded portion 56 of theslide rod is a nut 60'which is engaged by another nut 61; By turning thenut 60 the tension of the spring 59 may be adjusted at will and the nut61 simply locks the nut 60. The operator, by adjusting these nuts,

may vary the sensitiveness of the pawl 34 as controlled by the-governor23. For instance, by so adjusting the nuts 60, 61, as to through thetube 15. Mounted upon the tube 15'near its top is a bracket 64 held uponit by a clamping collar 65. A lantern is shown at 66 and is provided atits bottom with a clamp 67 having a clamping bolt 68 for securing thelantern upon the bracket 64. Mounted rigidly upon the upper end of thetube 15 is a fork'69 serving, to some extent, the purpose of a hanger.Mounted upon the clamping collar 65 is a bracket 70 which supports ashield 71 having the form of a disk.

Supported by the fork 69 is a rocking shaft 72 and mounted rigidly uponthis.- rocking shaft is a leaf 73 painted or otherwise colored so as'tobe readily seen from a distance. Mounted loosely upon the shaft 72 is abevel gear 74 which meshes with a bevel pinion 75, the latter beingkeyed rigidly upon the upper end of the shaft 63. A spring pawl 76 ismounted upon the bracket 70 and forms a limiting stop for preventingexcessive travel of the leaf 73 and conse-' quently of the shaft 72.Splined upon this shaft is a washer 72, which turns with the shaft butis movable slightly in the general direction of the axis thereof. A setcollar 77 is mounted rigidly upon the shaft 7 2. A

barrel 78 (see Fig. 6) is provided with a disk 79 secured within it,this disk being rigid relatively to the shaft 7 2. A compression spring80 of spiral form encircles the shaft 72 and engages the disk 79 andalso the washer 72, the pressure of the spring tending to force thesetwo members apart. The washer 72 revents the compression sprin 80 fromwinding up or otherwise being displaced. A tors on spring 81 isconnected at one of its ends to the disk 79 and at its other end to thefork,69. The purpose of this torsion sprin is to retract the barrel 78and in doing this to restore the shaft 72 to a predetermined positionafter its displacement therefrom by a quarter of a turn. The tension ofthe spring 81 is suflicient to hold the shaft 40 and the gear 45stationary at all times when the rim 48 is free to rotate.

The lantern 66 is provided with a bulls eye 82 through which lightpasses. Secured rigidly to the barrel '78 is a yoke 83 carryingspectacles 84, 85, the spectacle 84 being adapted to cover and uncoverthe bulls eye 82. The lantern 66 is further provided with anilluminating face 83 which is covered and uncovered by the spectacle 85.The spectacles 84,- 85 areprovided with colored panes 86, 87, of glassor other transparent material, through which the light may pass.Whenever the bevel gear 74 is turned in a clockwise direction, accordingto Fi 5, the torsion spring 81 is wound because the shaft 7 turns auart'er of a revolution in a clock w1se direction. This lowers thespectacles 84, 85.. A stop pin 88 (see dotted lines, Fig.

prevents further rotation. The spectacles remain in this position solong as rotatinues sufficient friction to hold the shaft 7 2 in theposition described, and in doing this .the torsion spring 81 is keptunder increased tension. As soon, however, as the rotation of the gearwheel 74 stops, the torsion spring 81 has a chance to recover its normalposition 'and in doing this it turns the shaft 7 2 backward by a quarterof a turn so that the spectacles S4, 85 assumethe position indicated byfull lines in Fig. 5.

For convenience the mechanism as shown in Fig. 5 may be considered asrepresentative of thenormal .condition of the apparatus.

The operation of my device is as follows: The parts being arranged asabove described, and motion being communicated to the car 7, therotation of the car wheel 8 causes the worm gear 10 to turn the worm 11and consequently the shaft 12. This causes the shaft 20 to rotatepositivel and at a speed proportionate to that o the car. Thespeedometer 7 -is thus actuated so as to indicate at all times the speedof travel ofthe car. The rotation of the shaft 20 causes the centrifugalgovernor23 to change its position slightly, as indicated by dotted linesin Fig. 3. The link 28 moves the sleeve 26 axially along the shaft 2Ofor a little distance and the sleeve 26 moves the sleeve 31correspondingly, thus moving the fork 30 and causing the shaft 32 torock slightly. This compresses the spring 59 which, as

"above explained, has been adjusted to such tension as to give it anapportionate degree of sensitiveness. Subject to this sensitiveness ofthe spring 59 the pawl 34 (being rigid upon the shaft 32) rocks alittle, as in-. dicated by dotted lines in Fig. 3, thereby coming intothe path of the tooth 48*. The rotation of the shaft 20 causes the Worm39 to turn the gear wheel 43 so that the rotation of the bevel gear 44is constant and positive, these parts turning loosely on the shaft 40whichis now stationary. The motion of the bevel gear 44 tends to turnthe pinions 49, 50, each upon its own axis. The

bevel gear 45 is not entirely free to turn,

being restricted by the action of the torsion spring 81 (see Fig. 6).The bevel ears 49 must have a tendency to perform p anetary movements,or in other words, to rotate bodily around the shaft 40 as a center. Upto this time the shaft 40 is stationary, and consequently the gear 45 isat rest. With the bevel gear 44 and the disk 48 turning, but atdifferent rates of speed, and the gear 45 stationary, this gear isliable to be turned 7 whenever a little extra pressure is placed uponit. The normal condition of the apparatus is thus maintained, the visualsignal now appearing as indicated by full lines in Fig. 5. When,however, the speed increases until the pawl 34 moves into the path ofthe tooth 48, the rotation of the disk 48 is stopped. This being done,the bevel pin ions 49, 50 are unable to move bodily around the axis ofthe shaft 40 as a center, but are nevertheless free. to rotate each uponits own individual axis. This being so, they communicate rotary motionto the bevel gear 45 so thatit turns positively, but in a directionopposite that of the gear 44. The shaft 40 and the gear 44 now turn inopposite directions. The turning of the bevel gear 45 causes the shaft63 to rotate and this causes the bevel pinion 75 to turn the bevel gear74. This bevel gear, because of its frictional engagement with the setcollar 77 which is rigid upon the shaft 72, causes this shaft to turn asabove described, thereby winding the torsion spring 81. A quarter turnof the shaft 7 2 having been made and the shaft being unable to rotatefurther because of the limiting stop afforded by the pin 88 (see Fig.5), the gear wheel 74 simply slips idly upon the set collar 77, theefiect of the rotation of the bevel gear 74 being merely to prevent thetorsion spring 81 from immediately turning the shaft 72 backward. Thespectacles 84, 85 being lowered (see dotted lines, Fig. 5) by thisquarter revolution of the shaft 7 2, the operator is apprised that thespeed of the vehicleis exceeding the predetermined limit allowed for it.He therefore slows down the motion of the car, or takes otherappropriate action related to the excessive speed. Whenever the speed ofthe car is reduced to a point within its limits, sothat the governor 23rights itself, as indicated by full linesin Fig. 3, the pawl 34 isremoved from the path of the tooth 48 and the rim 48 is now left free toturn. The instant the rim 48 is thusleft' free to turn, the applicationof power is necessarily cut off from the bevel gear 45 and consequentlythe rotation of the bevel gear 74 (Fig. 6) is stopped. The torsionalspring 81 thereupon turns the shaft 72 backward a quarter of a turn soas torestore the spectacles to their normal position indicated by fulllines in Figs. 5, 6. In doing this, the shaft 40 and gear 45 beingsuddenlyfreed from restraint are momentarily turned in the samedirection as the rim 48.

In practice the operator merely adjusts the tension of the'spring 59 torepresent a predetermined critical speed limit, and whenever thespectacles 84, 85 are lowered, as indicated by dotted lines in Fig. 5,he slackens the speed until the s eetacles are raised. If the lantern 66is lig ited, the'oporator merely observes the color of the light, and inthis way is apprised whether the speed of the car exceeds apredetermined limit.

\Vhile for convenience I show the speedcontrolled mechanism as connectedwith a semaphore having movin parts, I do not limit myself to thisparticular application, for obviously the invention maybe employed uponspeed-controlled mechanism connected with any sort of device to beactuated suddenly whenever the speed exceeds'a predetermined limit.

Having thus described my invention, I claim as new anddesire to secureby Letters Patent: k t

1; The combination of a revoluble shaft, a governor mounted thereupon, asleeve encircling said shaft and connected with said governor, a rockingshaft, mechanism connecting said sleeve with said rocking shaft so as tocause the same to rock in consequence of changes of speed of saidgovernor,

a pawl connected with said rocking shaft and adapted to be shifted inposition, and gearing connected with said shaft and driven thereby, saidgearing including a revoluble member, provided with a tooth,

- said tooth being so positioned as to engage said pawl whenever thelatter occupies a predetermined position controllable by the speed ofsaid overnor, and mechanism connected with sa1d revoluble member and.controllable thereby, said last-mentioned mechanism being driven by saidshaft whenever said revoluble member is stopped by said pawl.

2. The combination of a revoluble driving shaft, a governor connectedtherewith, a

pawl connected with said governor and controllable by movements thereof,gearing connected with said driving shaft and driven thereby, saidgearing including a revoluble member provided with a tooth for engagingsaid pawl, said pawl being so positioned as to partially'obstruct thepath of travel of said tooth when said pawl occupies a predeterminedposition controllable by the speed of said governor, and mechanismconnected with said revoluble member and controllable thereby, saidmechanismbeing driven by said shaft whenever said revoluble member isstopped by said: pawl.

3. The combination of a revoluble driving I shaft, a revoluble drivenshaft, a governor connected with said revoluble driving shaft, a pawlconnected with said governor and actuated by motions of the same,gearing disposed intermediate said driving shaft and said driven shaft,and mechanism including a revoluble member provided with a portion forengaging said pawl when the latter occupies a predetermined position,the position of said gearingintermediate said driven and said drivingshafts being adapted to change when said pawl is engaged bysaid portionof said revoluble member.

4. The combination of a revoluble drivin shaft, a governor mountedthereupon, a paw connected with said governor and controllable thereby,a revoluble driven shaft, gearing for connecting said driving shaft withsald driven shaft, said gearing including planetary gear wheels meshingtogether, and a. revoluble member for supporting said planetary gearwheels, said revoluble member being provided with a tooth for engagingsaid pawl and thus stoppin the rotation of said revoluble member for t epurpose of changing the operative relation between said driven shaft andsaid driving shaft.

In. testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HAYDN MOZART BAKER, JR. lVitnesses VVALTON HARRISON,

JOHN P. DAVIS.

